Skip the auto shop - Our mechanics make house calls

Q: Sudden loss in power

asked by on

My car was losing power after my friend jumpstarted my car the wrong way he plugged in the negative to the positive and the positive to the negative into his car and then plug it into my car and then after I jumpstarted my car my car suddenly lost power, even if my floor the gas I'm not getting the pull I used to. I jump started my car before the right way and everything was fine. There is no check engine light or any kind of light on my dash board.

My car has 145300 miles.
My car has a manual transmission.

Jumpstarting a car made in this century is always a risky business. Even if you do everything right, the resulting power surge can damage the cars electronics. If you hook the cables up backwards, there is a spark and the damage is done before you can even realize that you’ve got it wrong and disconnect the cable. The fact is, any or all of the controllers could be damaged, and some parts might be damaged but not show it until later on. I recommend you not try anything else until you have a qualified technician with the right diagnostic equipment check out the car. YourMechanic can send a technician to your home with the right equipment to evaluate your car recommend your next steps.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car won't start, sat for months

Hello. You are on the right track with testing the starter to see if it works. It is also possible that the battery has a bad cell in it and is not strong enough to start the car. I would...

Q: check break system and indicators of side brake, doors open,and traction system and full light warning in dash board

Hi there, thanks for writing in. It sounds like you are having a serious electrical malfunction, which is very hard to diagnose without being able to look at the car first hand. The first step to diagnosing your electrical issue...

Q: Why would I need a new hall sensor, is that and a cam sensor vital to fix before driving a long distance?

Hi There, A hall sensor is in many cases the same as a camshaft position sensor. Many camshaft position sensors work on what is called the "hall effect" meaning they provide a square wave output voltage (either 5 V or...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.